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Kernel: Add support for MSG_NOSIGNAL and properly send SIGPIPE

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Previously we didn't send the SIGPIPE signal to processes when
sendto()/sendmsg()/etc. returned EPIPE. And now we do.

This also adds support for MSG_NOSIGNAL to suppress the signal.
This commit is contained in:
Gunnar Beutner 2022-10-23 10:30:12 +02:00 • committed by Linus Groh
parent e5e7ea90b1
commit ce4b66e908
4 changed files with 16 additions and 5 deletions
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4
Kernel/FileSystem/FIFO.cpp
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@ -120,10 +120,8 @@ ErrorOr<size_t> FIFO::read(OpenFileDescription& fd, u64, UserOrKernelBuffer& buf
ErrorOr<size_t> FIFO::write(OpenFileDescription& fd, u64, UserOrKernelBuffer const& buffer, size_t size)
{
if (!m_readers) {
Thread::current()->send_signal(SIGPIPE, &Process::current());
if (!m_readers)
return EPIPE;
}
if (!fd.is_blocking() && m_buffer->space_for_writing() == 0)
return EAGAIN;